Question

I have something like this:

class thread1(threading.Thread):
    def __init__(self):
        file = open("/home/antoni4040/file.txt", "r")
        data = file.read()
        num = 1
        while True:
           if str(num) in data:
               clas = ExportToGIMP
               clas.update()
           num += 1     
thread = thread1
        thread.start()
        thread.join()

And I get this error:

TypeError: start() takes exactly 1 argument (0 given)

Why?

Answer 1

thread = thread1 needs to be thread = thread1(). Otherwise you’re trying to call methods on the class, rather than an actual instance of the class.

---

Also, don’t override __init__ on a Thread object to do your work – override run.

(While you can override __init__ to do setup, that’s not actually run in a thread, and needs to call super() as well.)

---

Here’s how your code should look:

class thread1(threading.Thread):
    def run(self):
        file = open("/home/antoni4040/file.txt", "r")
        data = file.read()
        num = 1
        while True:
           if str(num) in data:
               clas = ExportToGIMP
               clas.update()
           num += 1     

thread = thread1()
        thread.start()
        thread.join()